I watched the first episode of your "Beginner Platformer Series" and it is very informative and clear. I have only two constructive remarks :
First, the speed of your talking is in many places too fast. Maybe good for an english speaker but for a person where the native language is not English, can be a problem.
Second, you should make the explanation of properties, methods in the very first moment you are using them. In the beginning you are referring to an explanation somewhere later on. In my opinion it is better to do the explanation right away the first time.
Your tutorials are excellent and fun to follow. I will surely continue to the rest of the series. I surely recommend your tutorials. A job well done!!!